Song o' My Heart is a 1930 Pre-Code American film directed by Frank Borzage and starring John McCormack, Alice Joyce, Maureen O'Sullivan, Effie Ellsler and John Garrick. It was O'Sullivan's second film role. The film was double-shot in both conventional 35mm and the early 70 mm Grandeur film widescreen format. Very few theaters were equipped with the necessary projection equipment to show it in the latter and it was never released in that format.